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Bandai Namco announced a fourth major expansion for Sword Art Online: Fatal Bullet called “Dissonance of the Nexus” during its Sword Art Online Game 5th Anniversary stage event at Tokyo Game Show 2018. It is a story set after the main scenario featuring Sachi.

Additionally, Bandai Namco announced that both Sword Art Online: Hollow Realization and Sword Art Online: Fatal Bullet are coming to Switch. The latter is the Complete Edition announced for existing platforms.

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Having Sword Art Online on a Nintendo platform is also a first I believe.
So far the series was almost exclusively on Playstation platforms and PC.
None of them are exceptional games sales and review vise, but they have their fanbase.